Set yourself an alarm that speaks the current time when it goes off. You can be woken in the morning with "The time is 8:00 AM" or be reminded when you need to leave work with "The time is 5:00 PM".
No need to leave the app open, just set your alarms and close the app.
Please note: Your device must not be set to silent, if it is set to silent the alarm sound will not play.
IOS5 Users recommended notification settings for best results:
- Notification Center: OFF
- Alert Style: Alerts
- View in Lock Screen: OFF
These settings are accessible from:
Home Screen->Settings->Notifications->Talking Alarm